Base difficulty: Level 1399 edit
Level distribution for noun (linguistic_concept): 280: 2 329: 4 1110: 23 1120: 2 1399: 25
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B1 (3 of 6) | 4200 |
Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).
Corpus Frequency
| Corpus | Freq (per M) | Best form | Share | Zipf rank | Forms |
|---|---|---|---|---|---|
19th_books |
1.74 | 7142 | 20% | 20000 capped | 1 |
20th_books |
1.26 | 8533 | 20% | 20000 capped | 1 |
wiki_math |
51.36 | 761 | 20% | 2507 downrated | 2 |
wiki_geography |
94.17 | 229 | 20% | 1145 downrated | 1 |
wiki_biology |
11.68 | 2332 | 20% | 9000 capped | 1 |
wiki_modern_life |
75.85 | 273 | 20% | 1365 downrated | 1 |
wiki_arts |
55.90 | 408 | 20% | 2040 downrated | 1 |
wiki_society |
24.13 | 1144 | 20% | 5720 downrated | 1 |
wiki_linguistics |
51.57 | 978 | 20% | 2514 downrated | 2 |
wiki_physical_science |
19.14 | 1529 | 20% | 7645 downrated | 1 |
wiki_history |
27.76 | 952 | 20% | 4760 downrated | 1 |
early_modern_science |
11.31 | 2010 | 20% | 10050 downrated | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
50.70 | 526 | 20% | 2411 downrated | 2 |
eu_parliament_debates |
16.12 | 1417 | 20% | 7085 downrated | 1 |
openstax_science |
6.06 | 3778 | 20% | 11000 capped | 1 |
openstax_society |
21.97 | 1269 | 20% | 6345 downrated | 1 |
wpa_life_histories |
5.54 | 2821 | 20% | 14105 downrated | 1 |
Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.